.wrap {
	width: 640px;
	height: 100%;
	background-image: url(../img/bg.png);
	background-size: 100% 100%;
	background-repeat: no-repeat;
	position: relative;
}

.head img {
	width: 640px;
	height: 150px;
}

.image {
	width: 580px;
	height: 430px;
	background-color: #8f7c9e;
	border: 10px solid white;
	text-align: center;
	margin: 20px;
}

.image .im1 {
	width: 425px;
	height: 345px;
	margin: 50px 0 0 50px;
	display: block;
}
.image .im2 {
	width: 480px;
	height: 370px;
	margin: 30px 0 0 50px;
	display: none;
}

.answer {
	overflow: hidden;
	width: 100%;
	display: flex;
	flex-wrap: nowrap;
	flex-direction: row;
	justify-content: center;
}

.answer .ans {
	width: 100px;
	height: 100px;
	color: black;
	font-size: 60px;
	font-weight: 600;
	text-align: center;
	line-break: 100px;
	background-image: url(../img/关4-5_03.png);
	background-size: 100% 100%;
	background-repeat: no-repeat;
	margin: 20px 20px 0 0;
}

.choice {
	width: 500px;
	margin: 20px 20px 100px 20px;
	background-color: white;
	border-radius: 10px;
	padding: 0px 50px 20px 50px;
	overflow: hidden;
}

.choice div {
	width: 80px;
	height: 80px;
	text-align: center;
	line-height: 80px;
	background-color: #f18712;
	color: white;
	font-size: 50px;
	font-weight: 900;
	float: left;
	margin: 20px 20px 0px 20px;
}

.bg {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(100, 100, 100, 0.5);
	display: none;
}

.bg img {
	position: absolute;
	left: 50px;
}

.bg .right {
	top: 200px;
}

.bg .wrong {
	top: 300px;
}